wood pellets
solid biomassDESNZ 2025 Wood Pellets. Scope-1 CO2e (CH4+N2O) is separate from the biogenic combustion CO2 ('outside of scopes'). Wood chips are a related DESNZ product (NCV 13.6 MJ/kg, density 253 kg/m³) not separately catalogued in v0.1.
- Wood-pellet energy content depends on moisture and feedstock; the figure is representative, not exact.
- Biogenic CO2 from pellet combustion is reported on a SEPARATE line ('outside of scopes'), not silently zeroed.
Density
650 kg/m³
at bulk, as sold
Heating values
LHV/NCV
- 17.28 MJ/kg
HHV/GCV
- 18.694 MJ/kg
Source for all values above
Emission factors
- CO₂e 0.05519389 kgCO₂e/kgScope 1 (direct) · UK · 2025
- biogenic CO₂ 1.67718 kgCO₂/kgoutside the scopes (biogenic, reported separately) · UK · 2025
| Metric | Value | Scope | Region / year | Source |
|---|---|---|---|---|
| CO₂e | 0.05519389 kgCO₂e/kg | Scope 1 (direct) | UK · 2025 | |
| biogenic CO₂ | 1.67718 kgCO₂/kg | outside the scopes (biogenic, reported separately) | UK · 2025 |
CO₂ ≠ CO₂e — separate metrics, never converted into one another.Biogenic CO₂ is listed on its own line: the carbon still leaves the stack, but it is accounted for separately from fossil CO₂ rather than added to it. What these metrics mean →
Worked example: 1 kg wood pellets converted to every unit
Converting
1 kg · wood pellets
At a glance
- Energy · LHV 4.8 kWh source-based
- Volume 1.538 L source-based
- CO₂ ~1.68 kg CO₂ region + year
- CO₂e ~0.0552 kg CO₂e region + year
All results
Energy
Same energy expressed in other units.
Net calorific value · LHV/NCV
source-based every figure below
17.28 MJ
4.8 kWh
0.01728 GJ
16,380 BTU
Gross calorific value · HHV/GCV
source-based every figure below
18.69 MJ
5.193 kWh
0.01869 GJ
17,720 BTU
Mass
exact every figure below
1,000,000 mg
1,000 g
1 kg
0.001 t
~2.20462 lb
Volume
Emissions
CO₂ and CO₂e are separate — never derived from each other.
region + year every figure below
~0.0552 kg CO₂e
~1.68 kg CO₂
Energy density
Energy per unit of mass or volume.
Net calorific value · LHV/NCV
Assumptions
- density: assumed wood pellets density 650 kg/m³ at bulk, as sold
- heating value basis: energy on LHV/NCV basis, 17.28 MJ/kg
- heating value basis: energy on HHV/GCV basis, 18.694 MJ/kg
Sources
Follow each source back to its primary document — that traceability is the point. How conversions work →
Sources
Learn more
HHV/GCV vs LHV/NCV Higher heating value counts the heat of condensing water vapour; lower heating value does not. The gap can be 5–20%.CO₂ vs CO₂e CO₂ is only carbon dioxide; CO₂e bundles other greenhouse gases by their warming potential. There is no conversion between them.Why fuel conversions are approximate Density, calorific value and emission factors are material properties that vary — so fuel results are sourced estimates, not constants.